Specifications

EXACOM VCR-2020



E) RADIO (Contact Closures, PTT)

Uses external start to detect signal from radio equipment.

1) On SW1, set Switch 1 to the ON position. Set Switch 2 and 3 to the OFF

position.

2) Audio sources can be connected either to primary or secondary pair or both.

If transmit and receive are separate.

3) Positions 5 and 6 on the terminal block connect to either a dry contact (T,R

relay) or PTT (voltage sense).

4) Adjust for voltage detection (as Part B, Section 4, steps b - e).

5) Test for proper record operation. Key closure RECORD, Key open IDLE.

Note: Remove 1K resistor if input 2 is used.

Figure 8: Console Rear Panel Connections for Radio Interface

F) VOR/VOX: (When no external start signal is available.)

1) Connect the audio source to the primary or secondary pair on the jack

labeled LINE (or position 1 and 2 or 3 and 4 respectively on the terminal

block).

2) Adjust potentiometer labeled VOR to recognize and reject ambient noise.

This will establish the ON/OFF levels for VOR/VOX connection.

3) Set Switches 1,2 and 3 on SW1 in the OFF position.